“What do you mean?”

“Why, this here place is like a ruin deserted by the folks who used to live here. For instance,” he pointed to some grass-covered excavations, “these were the furnaces.”

“Well,” said Ben thoughtfully, “then, if they followed the process used in all smelting-works, the bullion was melted in crucibles and cast into bars.”

“Exactly. Then, jest use your natural sense and think out how they got the bars ter the bullion-room? Why, they piled ’em on hand-cars and run ’em on a track.” He suddenly knelt down and ran his hand along the ground in front of the excavations. “Here’s the groove where the track was laid,—sure’s you’re born!”

Ben dropped beside him. “There is a groove!” he cried. “We’re regular detectives, Mundon!”

“It couldn’t run anywhere else,” the other said, as if to himself.

“Than to the bullion-room? Of course, it couldn’t, and it didn’t. It ran over there, didn’t it?” Ben pointed to the opposite wall.

“Yes,” said Mundon, “it must. My! They were careless in those days, if this was like any smeltin’-works ever I see, and I s’pose it was. They jest slung the stuff ’round like it was mud. They always counted on losin’ lots of it in splashin’.”

“I should think so. With no flooring in the furnace-rooms and all this dust being trampled into the earth floor year after year, I should think they’d have lost a fortune!”

“Mebbe they did.”